As of December 31, 2019, 450 nuclear reactors were operating in the world with a total installed 398.9 GW net capacity.

In 2019, the capacity of nuclear power plants increased by 2.5 GW. In 2019, energy produced at nuclear power plants amounted to about 10% of the world's energy.

In 2019, 53 new nuclear reactors were built in the world, including eleven in China and seven in India.

Six new nuclear units were commissioned and construction of three more began.